KR101241894B1 - Apparatus for receiving broadcasting and Method for receiving information of broadcasting program - Google Patents

Abstract

The present invention includes receiving program information including preview information containing summary contents of a broadcast program, extracting the preview information from the program information, and displaying the extracted preview information on a screen in a slide show format. It provides a broadcast program information receiving method comprising the step of.

Therefore, according to the present invention, by inserting the summary information of the program into the EPG information, the preview information is supported by the viewer so that the viewer can view the summary information of the program, so that the program can be easily selected.

Description

Apparatus for receiving broadcasting and method for receiving information of broadcasting program}

1A illustrates an example of a hierarchical structure of a ServiceInformation element among elements of an EPG.

1B is an example of a hierarchical structure of an epg element

2 is an embodiment diagram of a hierarchical structure of program information including a preview element according to the present invention;

3 is an exemplary embodiment of a specific structure and attributes of a preview element according to the present invention.

4 is a diagram illustrating an XML structure for implementing a preview function of EPG information according to the present invention.

5 is a binary encoding scheme for encoding information in order to transmit PG data.

6A and 6B are exemplary diagrams of binary encoding formats.

7A is a tag of an element included in the EPG information.

7B is a tag of an attribute of EPG information.

8 illustrates an embodiment of an identifier for an element for transmitting and receiving preview information according to the present invention.

9 illustrates an embodiment of an identifier of an attribute for a preview element in accordance with the present invention.

10 is a program table on a screen displaying a slide preview service of EPG information according to the present invention.

11 is a detailed operation diagram for executing a slide preview service of EPG information according to the present invention;

12 is a method for transmitting broadcast program information according to the present invention.

13 is a method for receiving broadcast program information according to the present invention.

14 is a structural diagram of an embodiment of a broadcast receiving device according to the present invention;

Description of the Related Art [0002]

101: tuner 102: demodulator

103: DAB decoder 104: memory

105: first audio decoder 106: error correction decoder

107: Demux 108: second audio decoder

109: video decoder 110: object descriptor decoder

111: BIFS decoder 112: packet decoder

113: data group decoder 114: MOT decoder

115: Binary EPG Parser 116: XML EPG Parser

120: program information decoder 121: EPG engine

122: EPG Browser 124: Slideshow Browser

The present invention relates to a broadcast receiving device and a broadcast program information receiving method, and more particularly, to a broadcast receiving device and a broadcast program information receiving method that can provide a preview information to the user to facilitate the use of the broadcast. .

Digital multimedia broadcasting has expanded the transmission form of digital audio broadcasting in which analog radio broadcasting is digitized and transmitted.

Digital multimedia broadcasting can extend a transmission form of digital audio broadcasting to transmit a video broadcasting signal in a video compression format and a data broadcasting signal for various information.

Digital multimedia broadcasting includes broadcasting web site (BWS), text information using dynamic label segment (DLS), traffic information by transport protocol experts group (TPEG), and program information including electronic program guide (EPG). The service can be provided to the user.

Digital broadcasting such as the digital multimedia broadcasting described above may include program information in a broadcast signal and transmit the program information, and the viewer may obtain information about a program of each channel.

As an example of program information, the electronic program guide (EPG) may include time, genre information, and the like for each program.

However, program information, such as an electronic program guide of digital broadcasting, does not include program information that allows a user to know the summary of each program in graphical form.

The present invention has been made to solve the above problems, and an object of the present invention is to generate a preview information to provide a binary (Binary) format to the viewer to display it to the viewer, broadcast program information transmission and reception method and It is to provide a data structure for transmitting broadcast program information.

Another object of the present invention is to provide a preview information in a slide show method, and to format it in a binary format (binary) format to display to the viewer, broadcast program information transmission and reception method and broadcast program information It is to provide a data structure for transmitting the.

In order to achieve the above object, the present invention comprises the steps of generating preview information containing a predetermined content of a broadcast program, assigning an identifier to the preview information, converting the preview information into a binary format, the preview It provides a broadcast program information transmission method comprising the step of including the viewing information in the electronic program guide and transmitting.

The preview information is characterized by providing a still image in a slide show method at predetermined intervals.

The preview information may include a preview element for providing a preview function, a slide preview element for supporting a slide format of preview information under the preview element, and an image displayed in a slide manner under the slide preview element. And an image element, wherein each identifier is assigned to the preview element, the slide preview element, and the image element.

The preview element has a name attribute having an identifier, and the name attribute is represented by a string.

The slide preview element has an interval attribute having an identifier that specifies an interval at which a still image is displayed, and the interval attribute is expressed as an unsigned integer.

The image element has a path attribute having an identifier specifying a path of an image or a mime value attribute having an identifier specifying an extension of a still image, and the path attribute or the mime value attribute is expressed in a string format.

The image element has a size attribute having an identifier that designates the size of the image, and the size attribute is expressed as an unsigned integer.

According to another embodiment of the present invention, the present invention comprises the steps of receiving program information including preview information of a binary format containing a predetermined content of a broadcast program, the program information of the binary format in a format that can be implemented in the receiver A method of receiving broadcast program information, the method comprising: decoding, displaying the preview information of the program information on a screen.

The preview information may be expressed in a slide show method in which at least two still images are displayed at predetermined intervals.

The preview information may be located under a program element or a program group element of the electronic program guide.

The preview information may be located under a media description element of the electronic program guide.

The program information may be implemented by XML (eXtensible Markup Language).

The decoding may include parsing the binary EPG syntax to generate an XML EPG file compliant with the XML standard.

According to still another embodiment of the present invention, a DAB decoder which decodes and outputs program information from a demodulated digital multimedia broadcasting signal, and the identifier is provided with the preview information in binary format containing a predetermined content of the program among the program information. A program information decoder to decode it and output it in a format that can be implemented by a receiver, an EPG engine to process the broadcast program information output by the program information decoder into a screen output signal, and a preview of the broadcast program information output by the EPG engine. Provided is a broadcast receiving device comprising an EPG output unit capable of displaying information.

The program information decoder distinguishes each attribute and element based on an attribute of the preview information and an identifier assigned to the element.

The program information decoder may parse the EPG syntax of the binary format to generate an XML EPG file compatible with the XML standard.

The apparatus may further include a slideshow browser that outputs the still image at predetermined intervals to display the preview information in a slide show manner.

According to still another embodiment of the present invention, in a data structure of a broadcast signal for transmitting broadcast program information, a slideshow of an epg element containing information related to a program and a summary of a broadcast program in a lower element of the epg element is provided. Provides a data structure comprising a preview element that can be implemented in a form.

Therefore, according to the present invention, by inserting the summary information of the program into the EPG information, the preview information is supported by the viewer so that the viewer can view the summary information of the program, so that the program can be easily selected.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In order to easily describe the present invention, an electronic program guide (hereinafter referred to as EPG) of digital multimedia broadcasting will be described as an example, but the present invention is not limited thereto.

The EPG provides the program information according to the channel to the user and the program information so that the user can watch or record the program using the information. Accordingly, the EPG may include a channel, a program name, a broadcast time, and the like.

In general, the EPG is transmitted in the form of an encoded binary, and the EPG may be implemented by decoding the transmitted binary or may be implemented on the screen by implementing the transmitted binary information in XML (eXtensible Markup Language). In this case, the implementation language is not limited, and the XML corresponds to an embodiment.

The EPG may have a structure including a plurality of elements. Hereinafter, an EPG implemented in XML will be described as an example to easily describe the element structure of the EPG. However, the present invention is not limited to an EPG implemented in XML.

The EPG may include service information containing broadcasting station and channel information and program information containing information related to program scheduling.

The EPG may include a ServiceInformation element as a top element of the service information, and an epig element as a top element of the program information.

1A shows an example of a hierarchical structure of a ServiceInformation element among elements of an EPG.

An example of a ServiceInformation element will be described with reference to FIG. 1A. The numerals shown in each element block in FIG. 1A indicate the number of elements. For example, 0 ... * indicates that the element is zero or more, and 1 ... * indicates that the element is one or more.

ServiceInformation is used as a container for ensemble elements.

The ensemble element may include a frequency element including frequency information and a service element meaning individual broadcasting.

The ensemble element or service element may include a serviceNameGroup element, a media description element, a conditional access (CA) element, a keyword element, a link element, and the like.

The serviceNameGroup element may include a short name, a medium name, a long name, etc. for the ensemble.

The mediaDescription element may contain a description of the ensemble, and the CA element may include scramble information. Also, the keywords element and the link element may each include corresponding information.

In addition, the service element may include a service ID element that can distinguish the service, a genre element indicating the classification of the service, an epigLanguage element indicating the language of the service, and the like.

EPG data may be encoded in binary numbers and transmitted in a multimedia object transfer (MOT) protocol.

1B illustrates an example of a hierarchical structure of an epg element. The epg element will be briefly described with reference to FIG. 1B as follows.

The epg element may include a schedule element, a program element, a programGroups element, and an alternateSource element.

The schedule element contains information about placing a program in a given time range. In addition, a scope element and a service scope element may be included below the scope element.

The programGroups element can be used to describe groupings of programs, events of programs in groups, and so on.

The alternateSource element indicates whether EPG information from another source can be received and used.

The programGroup element and the program element under the programGroups element include schedule name group elements, media description elements, genre elements, keywords elements, memberOf elements, link elements, and the like. It may include.

The mediaDescription element of the enumerated elements includes a multimedia element so that multimedia information about a program can be transmitted.

Figure 2 illustrates an embodiment of a hierarchical structure of program information comprising a preview element in accordance with the present invention.

Referring to FIG. 2, referring to the schema of a program type element under Program Information, a schedule name group, a location, a media description, and a genre are located below the program type element. Conditional access, keywords, memberof, link, and programevent elements, wherein the program information is displayed in a predetermined manner. There is more preview element to be.

Hereinafter, the broadcasting program information for viewing the summarized contents of the broadcasting program in the form of graphic information is called a preview.

The preview element may display a logo of each program in a slide manner, or may perform a preview function by displaying an image including information of a program at predetermined intervals. In addition, the present invention is not limited to this function, and various functions of a slideshow method may be performed. In the drawing, a preview type means a preview function.

The preview element may be a structure positioned as a direct child element of the program type, or may be positioned under the media description element or under a program event element. This is merely an embodiment, and the position of the preview element may be located at a position representing program information, and the present invention is not limited to the specific embodiment.

3 illustrates an embodiment of a specific structure and attributes of a preview element according to the present invention. 4 illustrates an embodiment of an XML structure for implementing a preview function of EPG information according to the present invention.

3 and 4, the preview element includes a slide preview element for displaying the preview information in a slide show manner, and a video preview element for displaying the preview information in a moving video manner. In the present invention, a preview of the slideshow method among the preview types will be described as an embodiment.

Hereinafter, for the convenience of explanation, the display of the slide type program information is described as a slide preview type.

The slide show method refers to a method of forming a predetermined plot while outputting a plurality of still images at predetermined intervals one by one. The information of slidepreview displayed is composed of a large number of still images of a specific scene of the program. The slide image may be composed around a scene, or the slide image may be configured based on an image that briefly shows the plot of the program. You may. That is, by presenting a brief image of the program, to help viewers select the program.

The slidepreview type may be inserted from 0 to infinity. If 0, this means that the slide preview type is not inserted. The slidepreview type has a slideshow attribute (attribute) and includes an image element as a lower element. At this point, the image element has several attributes.

The preview element has a name attribute, and the slideshow attribute has an interval attribute or a previewtype attribute.

The interval attribute means a time for displaying each image displayed in the slideshow method on the screen. The image is displayed on the screen for the time specified by the interval attribute and then advances to the next image. The interval can be defined as a non-negative number.

The previewtype attribute (not shown) indicates the type of the slide for previewing and may be given at least one value. The preview type can be given zero or a positive value. If the preview type is 0, the preview type is not given. In the case of a positive number, the number of types corresponding to the value exists.

For example, the preview type may be a timepoint that selects when the preview slide represents the plot of the broadcast, past, present, or future of the program, the bit rate of the image, or normal or high quality. Types according to resolution such as recognition can be separated. This example is only an embodiment and the preview type is not limited by this embodiment.

The image element represents the image in a slideshow manner with preview information. An unlimited number of slide images can be displayed. The image element has a path attribute (attribute), a mimevalue attribute (attribute), and a size attribute (attribute: attribute).

The path attribute defines an address or protocol of a resource and is represented by a string. That is, this attribute presents a path of a graphic in which the preview information is provided in a slide show method. Due to the address given in this attribute, the graphic is loaded. The path may be any format that can specify a path for receiving an image file. For example, if http is specified, it can be transmitted through the Internet. If DAB is specified, it can be transmitted via broadcast. This is merely an example and other communication paths may be used. An example of a format for specifying a path is url. url is used for telephony and fax, SMS, postal addresses, email, world wide web (www), wireless application protocol (wap) ), DAB, and other programs in the service can be specified.

The mimevalue attribute exposes a response type attribute. That is, it means the extension of the still image which is the target of the slide show. The extension of still images can be bmp, jpg, jpeg, etc.

The size attribute may have width information and height information as attributes. The width attribute represents the horizontal size of the image, and the height attribute represents the vertical size of the image. This size attribute can be defined as a non-negative number.

The attributes are described in a loop format, and each image is displayed in a slide show manner.

5 illustrates a binary encoding scheme for encoding information in order to transmit EPG data.

When transmitting EPG data, for example, the EPG data itself implemented in XML language is not transmitted. The XML schema is used to structure valid information, and binary encoding is used to encode the valid information and transmit it in a concise binary form.

In the present invention, when the generated preview information is transmitted, it is formatted by a binary coding scheme.

Referring to FIG. 5, a height of valid data Value of the preview information is given, and an identifier Tag of the whole is given. That is, it is encoded in the format of identifier-length-valid data. In the present invention, each element and attribute of the preview information has one unique identifier.

6A and 6B illustrate a binary encoding format.

6A and 6B, the upper element has a length that includes the value of the lower element and the total value. The lower element also becomes the upper element, and has a length that includes the value and the total value of the element below it. In this case, the value and the length are represented by binarization.

As described above, when the EPG information of the XML format of FIG. 6A is encoded according to the table shown in FIG. 6B, since the encoded information amount is smaller than the information amount before the encoding, the EPG information can be efficiently transmitted and received.

FIG. 7A illustrates a tag of an element included in the EPG information, and FIG. 7B illustrates a tag of an attribute of the EPG information.

Referring to FIG. 7A, tag information for identifying corresponding information is required to transmit, receive, and display EPG information in a binary encoding scheme. This tag information is used exclusively for mutual elements and should not be duplicated.

Referring to FIG. 7B, each attribute, like the above element, has tag information. However, since the tag of an attribute represents an attribute of the corresponding element, even if the same attribute is the attribute of another element, the tag may be duplicated.

8 illustrates an embodiment of an identifier for an element for transmitting and receiving preview information according to the present invention.

Referring to FIG. 8, the preview element, a slide preview element that is a sub element thereof, and an image element that is a sub element thereof are assigned a non-overlapping identifier.

In this case, a program element or a program event element may be a parent element, and a preview element which is a child element proposes 0X34 as an embodiment of the identifier.

Also, the preview element becomes a parent element, and its child element, the slide preview element, suggests 0X35 as an embodiment of the identifier.

The slide preview element also becomes a parent element, and its child element, the preview element, suggests 0X36 as an embodiment of its identifier. The embodiment of the proposed identifier is changeable and may be distinguished from other elements.

9 illustrates an embodiment of an identifier of an attribute for a preview element in accordance with the present invention.

Referring to FIG. 9, an identifier is assigned to a path attribute, a mime value, a width, and a length attribute as a name attribute of a preview element and an attribute of a slide preview element as an attribute. In the drawing, the path element is denoted by url.

In this case, the identifier of the attribute may be assigned an identifier that is not duplicated in the attribute of the same element, and the identifier may be duplicated for the attribute of the element that is not the same. This is because an element is first identified and attribute information about the element is identified.

In this case, 0X80 is proposed as an example of the identifier of the name attribute of the preview element. Name attributes should be written as strings. That is, it is represented as a string.

We also propose 0X80 as an example of the identifier of the interval attribute of the slide preview element. The interval attribute should be marked as an unsigned integer type. In this case, although the length of the integer is not limited, an embodiment of the 16-bit or 8-bit unsigned integer type is presented.

The path attribute of the image element also suggests 0X80 as an embodiment of the identifier. In this case, all encoded elements of the path attribute should be expressed as a string. In the drawings, the url attribute is an example of the path attribute.

We also propose 0X81 as an example of the identifier of the mime value attribute. In this case, all encoded elements of the mime value attribute should be expressed as a string.

In addition, an embodiment of the identifier of the width attribute is proposed as 0X82, and an embodiment of the identifier of the height attribute is proposed as 0X83. In this case, the width and height attributes may be expressed as an unsigned integer type. At this time, the length of the integer is not limited, but the embodiment proposes an unsigned integer type of 16 bits or 8 bits.

10 illustrates a program table on a screen on which a slide preview service of EPG information is displayed according to the present invention.

Referring to FIG. 10, a viewer may click a program of interest to view a slide preview screen or, if there is a preview screen of the program, may be displayed on the same screen together with the program name.

In this case, when the preview screen is not displayed with the program name and the program is to be moved to the lower part of the program, an icon representing the preview function may be displayed so that the viewer can easily know whether the slide preview EPG information is present. You can output it together. In FIG. 7, this is denoted P.

11 illustrates a detailed operation diagram of executing a slide preview service of EPG information according to the present invention. FIG. 9 is a diagram illustrating an embodiment in which a viewer may click a program of interest to view a slide preview screen in a manner in which the slide preview service is executed.

Referring to FIG. 11, when MBC News Today is selected, string information about the program is displayed. When a preview type is selected and clicked, a slide image according to the selected preview type is displayed. Preview types 1, 2, and 3 in the drawing are cases in which the preview type is designated as 3. Preview type 1 is the preview information of the program to be broadcasted now, preview type 2 is the preview information of the program that has been broadcast in the past, and preview 3 is the preview of the desired point in time if it is designated as the information of the program to be broadcast in the future. Function can be performed. 5 seconds in the drawing is a case where an interval is specified as 5 seconds, and a still image is converted and displayed in a slideshow method every 5 seconds.

12 illustrates a broadcast program information transmission method according to the present invention.

Referring to FIG. 12, the transmitter generates the above-described preview information (s121), and assigns an identifier to each element and attribute of the preview information (s122). Data of each element and attribute of the preview information to which the identifier is assigned are converted into a binary format (s123). The preview information converted into the binary format is transmitted to the receiver.

13 illustrates a method of receiving broadcast program information according to the present invention.

Referring to FIG. 13, the receiving side receives the preview information in binary format transmitted from the transmitting side (s131). The received binary EPG syntax is parsed to generate an EPG file that can be implemented in XML (S132). The preview information by the EPG file is expressed in a slide manner (s133).

14 is a structural diagram of an embodiment of a broadcast receiving device according to the present invention. An embodiment of a broadcast reception device according to the present invention will be described with reference to FIG. 14 as follows.

The tuner 101 may tune a signal corresponding to an ensemble among broadcast signals including program information, frequency convert the baseband, and output the baseband.

The demodulator 102 may output a transmission frame including a synchronization channel, a fast information channel (FIC), and a main service channel (MSC) by demodulating the modulated signal according to the transmission scheme.

The DAB decoder 103 decodes the fast information channel (FIC), extracts an ensemble label, a service label, and a virtual channel number assigned to the service, and generates a channel map from the extracted information. Can be stored in the first storage unit 104.

The DAB decoder 103 may decode the MSC to extract actual data. If the extracted data is an audio signal, the DAB decoder 103 may output the first audio decoder 105, and output the error correction decoder 106 if the extracted data is an audio signal.

The first audio decoder 105 may decode and output a compressed coded audio signal of a coding scheme such as masking pattern adapted universal sub-band integrated coding and multiplexing (MUSCAM).

The error correction decoder 106 may perform error correction on the data stream and output the result to the MPEG-2 demultiplexer 107.

The MPEG-2 demultiplexer 107 performs transport packet depacketizing, packetized element stream (PES) depackaging, and sync layer (SL) depacketizing on the error corrected data stream. The data may be separated into audio, video, object description, and binary format for scenes (BIFS) data, and then output to the decoders 108, 109, 110, and 111 of each data.

The decoders 108, 109, 110, and 111 may decode and output audio, video, object descriptors, and BIFS data in consideration of the format of each data. As an example, the second audio decoder 108 decodes the audio signal with a bit slice arithmetic coding (BSAC) decoding algorithm, and the video decoder 409 decodes the video signal with a H.264 decoding algorithm.

On the other hand, the data related to the program information is input to the program information decoders 120 and 112 by the MSC information decoded by the DAB decoder 103.

The program information decoder 120 may include a packet decoder 112, a data group decoder 113, a MOT decoder 114, a binary EPG decoder 115, and an XML EPG parser 116.

The packet decoder 112 may extract and output data transmitted by a transmission protocol in units of packets. The data group decoder 113 may group and output data output from the packet decoder 112.

The MOT decoder 113 may output the grouped data in a file format by a multimedia object transfer (MOT) algorithm.

 The binary EPG decoder 115 may generate an EPG file that may be implemented in XML by parsing the binary EPG syntax. That is, an identifier is assigned in the binary format and an EPG file is generated by parsing a value designated in the binary format.

The XML EPG parser 116 may parse and output the generated EPG file in XML format.

In addition, the XML EPG parser 116 may parse an XML schema including broadcast program information for preview.

The EPG engine 121 may store the result parsed by the XML EPG parser 116 in the database 123 and process the result.

As described above, since XML is an example of an EPG implementation means, if the EPG is not implemented in XML, the XML EPG parser 116 is not necessarily provided in the broadcast receiving apparatus according to the present invention. Element.

The EPG output unit 122 may output the EPG information stored or processed by the EPG engine on the screen. The preview selection item may be displayed on the screen through the EPG output unit 122. When the user selects a preview option for a program, the summary of the program may be displayed on the screen through the slideshow browser 124 in a graphic form, for example, in a slideshow.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

The effects of the broadcast receiving apparatus, the broadcast program information transmission and reception method, and the data structure for transmitting broadcast program information according to the present invention described above are as follows.

First, the preview information is supported by inserting the summary information of the program into the EPG information, so that the viewer can view the summary information of the program, so that the program can be easily selected.

Second, the viewer can view the summary information of the program in a slide show method formed of not only one still image but also several image files, thereby providing effective preview information.

Third, by assigning an identifier to the preview information and binarizing it in a predetermined format, it is possible to transmit and receive the preview information in the promised standard.

Claims (19)

Receiving program information including preview information containing summary contents of a broadcast program; Extracting the preview information from the program information; And A method of receiving broadcast program information comprising displaying images designated by the extracted preview information on a screen in a slideshow format, The preview information includes an image element, The image element, A path attribute specifying a uniform resource locator (url) path from which the images are taken; And And a mimevalue attribute for designating an extension of the images. The method of claim 1, And the preview information is included in the electronic program guide as a preview element for providing a preview function. 3. The method of claim 2, And the preview element is located in at least one lower element of a program group element or a program element of the electronic program guide. 3. The method of claim 2, And the preview element is located at a lower element of a media description element of the electronic program guide. 3. The method of claim 2, And the preview element includes an interval attribute that specifies a defined time interval for displaying images. 3. The method of claim 2, And the preview element includes a preview type attribute that specifies a preview type. 3. The method of claim 2, And the preview element comprises at least two image elements specifying images displayed in the slideshow format. delete delete 8. The method of claim 7, And the image element includes a size attribute that specifies the size of the images. A broadcast signal receiver configured to receive program information including preview information; A program information decoder for extracting the preview information containing the summary content of the broadcast program from the received program information; An EPG engine for processing the preview information output by the program information decoder into a screen output signal; And A broadcast receiving device including an EPG output unit for displaying images specified by the preview information output from the EPG engine in a slide show format, The preview information includes an image element, The image element, A path attribute specifying a uniform resource locator (url) path from which the images are taken; And And a mimevalue attribute specifying an extension of the images. In claim 11, And the preview information displayed by the EPG output unit includes at least two still images. In claim 11, The program information decoder includes a binary EPG parser that converts the received program information into an XML (eXtensible Markup Language) standard. 12. The method of claim 11, And the program information decoder comprises an XML EPG parser that parses an XML file of an electronic program guide and extracts the program information. 12. The method of claim 11, And a slideshow browser configured to display the preview information output from the EPG output unit in the slideshow format. delete delete delete delete

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